TD Bank, N.A., is a United States national bank chartered and supervised by the federal Office of the Comptroller of the Currency. The company first opened its doors as Portland Savings Bank in Portland, Maine, in 1852, and later grew through a series of mergers and became Peoples Heritage Bank in 1983. TD Bank, N.A. was formerly known as TD Banknorth, National Association and changed its name to TD Bank, N.A. in September 2009.